(19)
(11) EP 1 275 225 A1

(12)

(43) Date of publication:
15.01.2003 Bulletin 2003/03

(21) Application number: 01920536.8

(22) Date of filing: 19.03.2001
(51) International Patent Classification (IPC)7: H04L 12/56, H04Q 7/38
(86) International application number:
PCT/US0108/804
(87) International publication number:
WO 0107/6162 (11.10.2001 Gazette 2001/41)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 03.04.2000 US 541832

(71) Applicant: Ericsson Inc.
Research Triangle Park, N.C. 27709 (US)

(72) Inventors:
  • LINDSKOG, Jan
    S-435 43 Pixbo (SE)
  • LUNDQVIST, Patrick
    Encintitas, CA (US)
  • RYDNELL, Gunnar
    S-430 65 Ravlanda (SE)
  • LINDHEIMER, Christofer
    S-164 42 Kista (SE)
  • MOLNO, Johan
    S-128 56 Bromma (SE)

(74) Representative: Wennerholm, Kristian et al
Ericsson AB,Patent Unit Radio Networks
164 80 Stockholm
164 80 Stockholm (SE)

   


(54) METHOD AND APPARATUS FOR EFFICIENT HANDOVER IN PACKET DATA COMMUNICATION SYSTEM